From equation (REF ), we see that \(U^{\dagger }[1]=-U[1]\)  and
\(\mbox{Tr}(U[1])=0\) . Therefore equation (REF ) is an
explicit expression of the single-soliton solution of the HM model
based on \(SU(2)\)  obtained by using Darboux transformation.
Similarly one can calculate explicit expression for the
multi-soliton solution of the model. The expression (REF )
is similar to the expression of the single soliton given in
[1]}.
section1-3.5ex plus -1ex minus
-.2ex2.3ex plus .2exConcluding remarks
